215/50r17 safe to run?

Discussion in 'Gen 4 Prius Main Forum' started by DonutHands, Apr 4, 2026 at 12:10 PM.

  1. DonutHands

    DonutHands Junior Member

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    I know it’s about 1 inch larger diameter than stock. Anyone safely run slightly oversized tires?
     
    #1 DonutHands, Apr 4, 2026 at 12:10 PM
  2. JC91006

    JC91006 Senior Member

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    Yes this size is perfectly fine for the Prius. You can do a search for that size on a Prius, you'll see many people have been using that size and didn't have any issues
     
    #2 JC91006, Apr 4, 2026 at 1:04 PM
  3. DonutHands

    DonutHands Junior Member

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    Thanks. I searched a ton, couldn’t find anyone saying it was good on a 4th gen. Seems to be stock on Prius V which makes searching difficult.
     
    #3 DonutHands, Apr 4, 2026 at 1:49 PM
  4. Mendel Leisk

    Mendel Leisk MMX GEN III

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    What?!

    4th gens come from the factory with either 195/65R15 or 225/45R17. The latter is actually slightly smaller outside diameter.

    a 215/50R17 I’d guesstimate to be near identical OD to the stock 15”. Definitely not an inch more.

    this site is good for comparisons:

    Tire Size Comparison
     
    #4 Mendel Leisk, Apr 6, 2026 at 9:45 AM
    Doug McC likes this.
  5. Doug McC

    Doug McC Senior Member

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    Nice site! Never would have figured both OEM sizes to be basically equal (not that I gave it that much thought), but still….
     
    #5 Doug McC, Apr 8, 2026 at 3:45 PM
  6. Mendel Leisk

    Mendel Leisk MMX GEN III

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    ugh, fat-finger typo, coupled with the site’s edit limit, please note above correction, for post #4.
     
    #6 Mendel Leisk, Apr 8, 2026 at 5:32 PM
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